When denier ideologues make the transition to accepting the reality of anthropogenic global warming, one of the arguments they start to use tends to go something along the following lines: “Sure, the polar bears might get screwed over, but otherwise things will be just great. Crop yields will increase and northerners will get to have their own sun-drenched beaches”. You wish. New research* indicates that beyond temperature rises of 7C, “zones of uninhabitability” will begin to overspread much of the world (“An adaptability limit to climate change due to heat stress” by Sherwood & Huber 2010). Not a Mediterranean world, more like Mad Max in Waterworld.

Of late climate models have been leaning to the upper range of the IPCC’s projections for global warming, e.g. the median forecast from a recent MIT study gives a rise of 5C by 2100 (with a 10% chance it will exceed 7C). According to the Sherwood paper, “peak heat stress” (quantified by the wet-bulb temperature) never climbs above 31C across today’s climes, which is safely below the body’s normal temperature of 37C. But with a global temperature rise of 7C possible by as early as the late 21st century – even without accounting for predictable tripwires such as accelerated release of Siberian and Arctic methane – some regions of the world will be subjected to peak wet-bulb temperatures of 35C, inducing “hyperthermia in humans and other mammals, as dissipation of metabolic heat becomes impossible“. With a global temperature rise of 11-12C, a belt of uninhabitability will come to encompass the bulk of today’s densely populated areas.

This post is about the future of military technology and war strategy in a world of informatization, resource scarcity, and renewed ideological turbulence. Be forewarned: while some of what I write here corresponds to the conventional wisdom, some is well off the beaten tracks, and some will sound like it’s straight out of a sci-fi dystopia.

The post-Cold War era was, for many, a lovely time. As the Soviet Union imploded, so did the risks of mutual destruction in a global thermonuclear war. At the end of history, the conventional wisdom now regarded rogue states, loose nukes, and transnational terrorists as the main challenges to the brave new world created by globalization. As Thomas P.M. Barnett argued in The Pentagon’s New Map, the primary challenge faced by the US military would no longer consist of planning for a traditional Great Power war with its erstwhile socialist foes, Russia and China. Instead, it would be wiser to focus on policing and “civilizing” the equatorial belt of instability known as the “Gap” – the impoverished, conflicted region stretching roughly from Central America through Africa and the Eurasian Dar al-Islam – in cooperation with fellow stakeholders in stability like Europe, China, India, Russia, and Japan.

However, one of the main assumptions of this blog is that this state of global affairs will not last, if it was ever really valid in the first place. First, many people in the pre-1914 era – an older golden age of globalization and shared international values – also believed that technical progress and increasing interconnectedness had made war obsolete, or at least unbearably damaging if it were to continue for any longer than a few months. They would be disillusioned by the First World War, the genesis of modern total war. Second, the international system today is unstable amidst the shifting winds of change, characterized as it is by a faltering US hegemon beset by challengers such as an expansionist Iran, a resurging Russia, and a robust China intent on returning to its age-old status as the Celestial Empire. Third, peak oil production, probably reached in 2008, is but one of the first harbingers of our Limits to Growth predicament – in the decades to come, the world’s grain belts will begin to dessicate, high-quality energy sources will become depleted, and ever more human effort under the knout of state coercion will have to be requisitioned to sustain industrial civilization against the mounting toll of energetic shortages, climatic disruption, and system instability.